do you know any tool that we can find expired domain? This company Register Compass they show expired domains with page rank, back links etc... Check out here http://bit.ly/fI68wu Do you know of any other company with better services?
Yes,you can use many tools to find expired domain Godaddy Auctions Pool.com Snapname.com Namejet http://justdropped.com (expired as well as PR domains)
What are the chances if snapping up a domain using one of these services? If there's an expiring domain that has loads of traffic and backlinks I would expect those companies to buy them.